“…10 But because some mTORs lead to adverse effects (eg, wound healing delay and increased rate of biopsy-proven AR), 3,4,16 the immediate posttransplant replacement of CNIs with mTORs would be unpleasant; such replacement is better if it is used after 3 to 6 months. 3,4,7,17 Firstly, such strategy prevents CNI-induced nephrotoxicity and CAN in different organ transplants 9,18 ; secondly, it allows CNIs primary protection from AR 4,5 ; third, it prevents the adverse effects of mTOR inhibitors (eg, wound healing delay 4,5 ); and finally, it increases the number and effects of T-regulatory cells in prevention of the AR processes. 5,19,20,21 Several trials have been tried to define the exact effects of such conversion.…”